Method and device for checking consistency of accelerated life test and external field result
An accelerated life test and inspection method technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the lack of accelerated life test evaluation means and methods, the inability to quantitatively evaluate the accuracy of accelerated life tests, and the inability to determine reliability Issues such as the important environmental factors of the performance evaluation, to achieve the effect of a reasonable test plan
Inactive Publication Date: 2019-10-15
CASIC DEFENSE TECH RES & TEST CENT
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[0005] In view of this, the object of the present invention is to propose a test method and device for the consistency of the accelerated life test and the result of the external field, to solve the lack of evaluation means and methods for the accelerated life test in the prior art, and the accuracy of the accelerated life test cannot be quantified evaluation, and it is impossible to determine the important environmental factors that affect the field reliability evaluation in the accelerated life test, which has brought certain adverse effects on the promotion and application of the accelerated test.
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[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0041] Based on the above purpose, an embodiment of the present invention proposes a method for checking the consistency between the accelerated life test and the field results. Such as figure 1 As shown, the method includes the following steps:
[0042] Step 101: Obtain the empirical distribution function F of the product under field operating conditions 0e (x).
[0043] In an embodiment of the present invention, the empirical distribution function F of the above-mentioned product under the field operation condition 0e (x) is the characteristic life model of the product under normal stress level.
[0044] Step 102: Obtain the empirical distribution function F of the product under the preset accelerated life test cond...
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The invention discloses a method and a device for checking consistency of an accelerated life test and an external field result, and relates to the field of accelerated life tests. The method comprises the following steps: step 101, obtaining an experience distribution function of a product under an external field operation condition; step 102, obtaining an experience distribution function of theproduct under the adjustment of a preset accelerated life test; step 103, carrying out a Smirnov test method; checking the consistency of the empirical distribution function of the product under the preset accelerated life test condition and the empirical distribution function of the product under the external field operation condition. The reflection degree of the accelerated life test on the external field actual operation reliability result can be effectively evaluated, the popularization of the accelerated life test is facilitated, and the design of a more reasonable test scheme is facilitated.
Description
technical field [0001] The invention relates to the field of accelerated life test, in particular to a method and device for checking the consistency between the accelerated life test and the result of the external field. Background technique [0002] The basic principle of accelerated life test is to use the extrapolation of characteristic life under high stress level to evaluate the characteristic life under normal stress level through the physicochemical relationship between product life and stress (ie accelerated model). [0003] For an effective accelerated life test, the test results must be measurable and have good consistency with the field operation results. This helps to directly evaluate and predict the field reliability level of the product. [0004] However, there is currently a lack of evaluation means and methods for accelerated life tests. On the one hand, it is impossible to quantitatively evaluate the accuracy of accelerated life tests; The popularization...
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Login to View More IPC IPC(8): G06F17/50
CPCG06F2119/06G06F30/20
Inventor 张生鹏赵朋飞翟疆胡雨晴
Owner CASIC DEFENSE TECH RES & TEST CENT